378554899 has 2 divisors, whose sum is σ = 378554900. Its totient is φ = 378554898.

The previous prime is 378554851. The next prime is 378554909. The reversal of 378554899 is 998455873.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 378554899 - 2⁹ = 378554387 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (378558899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189277449 + 189277450.

It is an arithmetic number, because the mean of its divisors is an integer number (189277450).

Almost surely, 2^378554899 is an apocalyptic number.

378554899 is a deficient number, since it is larger than the sum of its proper divisors (1).

378554899 is an equidigital number, since it uses as much as digits as its factorization.

378554899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10886400, while the sum is 58.

The square root of 378554899 is about 19456.4873242834. The cubic root of 378554899 is about 723.3963119626.

The spelling of 378554899 in words is "three hundred seventy-eight million, five hundred fifty-four thousand, eight hundred ninety-nine".